Which among the following are global-scale phenomena? Choose the correct answer from the options given below.

1.Ozone layer depletion

2.Global warming

3.Forest fire

4.Sea level rise

5.Air pollution

A1, 3 and 4 only

B1, 2, 3 and 4 only

C2, 3 and 5 only

D1, 2 and 4 only ✓ Correct

Correct answer: (D) 1, 2 and 4 only

Explanation

Ozone layer depletion, global warming and sea level rise operate across the whole planet, so they form the global-scale set.

Statement 1 is global because thinning of stratospheric ozone affects the entire atmosphere.

Statement 2 is global because rising greenhouse gas concentrations warm the whole Earth system.

Statement 4 is global because thermal expansion and melting ice raise seas worldwide.

Statement 3 is local because a forest fire is confined to a particular region.

Statement 5 is largely regional because air pollution concentrates around its source areas.

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